公开(公告)号：US5113126A

公开(公告)日：1992-05-12

申请号：US566319

申请日：1990-08-13

申请人： Tatsusuke Nanzan ,  Hideo Obi ,  Masahiko Nakamoto ,  Noriaki Nakamoto ,  Mikio Ohta

发明人： Tatsusuke Nanzan ,  Hideo Obi ,  Masahiko Nakamoto ,  Noriaki Nakamoto ,  Mikio Ohta

IPC分类号： B60L3/00 ,  B60L9/00 ,  B60L9/22 ,  H02M1/12

CPC分类号： B60L9/005 ,  B60L9/22 ,  H02M1/12 ,  B60L2200/26

摘要： A control device for an electric vehicle having a reverse L type first filter circuit composed of a first filter reactor and a first filter capacitor between a current collector and control means for controlling electric motor of the electric vehicle. A second filter circuit composed of a series connected second filter reactor and a second filter capacitor is connected in parallel to the first filter capacitor. The second filter circuit has circuit constants selected such that a composite impedance of the second filter circuit and the first filter capacitor when viewed from the control means becomes small at a specific frequency.

公开(公告)号：US20120289836A1

公开(公告)日：2012-11-15

申请号：US13467913

申请日：2012-05-09

申请人： Osamu Ukimura ,  Masahiko Nakamoto ,  Yoshinobu Sato ,  Norio Fukuda

发明人： Osamu Ukimura ,  Masahiko Nakamoto ,  Yoshinobu Sato ,  Norio Fukuda

IPC分类号： A61B8/12

CPC分类号： A61B8/085 ,  A61B8/12 ,  A61B8/14 ,  A61B8/587

摘要： An automatic real-time display system of the orientation and location of an ultrasound tomogram in a three-dimensional organ model based on the tracking of free-hand manipulation of an ultrasound probe having an AHRS sensor to acquire an entire three-dimensional volume data of an organ and real-time display to visualize the orientation and location of the ultrasound tomogram in three dimensions.

摘要翻译： 一种基于对具有AHRS传感器的超声探头的自由手操作的追踪获取三维体积数据的三维器官模型中的超声断层图的取向和位置的自动实时显示系统 一个器官和实时显示，可以显示超声断层图在三维方向和位置。

公开(公告)号：US4999561A

公开(公告)日：1991-03-12

申请号：US531689

申请日：1990-06-01

申请人： Atsushi Kaga ,  Masahiko Nakamoto

发明人： Atsushi Kaga ,  Masahiko Nakamoto

IPC分类号： H02M7/48 ,  H02M7/493 ,  H02P5/74 ,  H02P27/06

CPC分类号： H02P27/06 ,  H02M7/48

摘要： A variable-speed driving system for 3-phase induction motor by potential-dividing D.C. power from a D.C. power supply into two D.C. powers, converting these two D.C. powers into 3-phase A.C. powers by means of series-connecting 3-phase inverters and delivering the 3-phasse A.C. powers to respective windings of the 3-phase induction motor. In order to equalize the output powers of the series-connected 3-phase inverters, circuits are provided which are operative in accordance with the voltage difference between the voltages input to said 3-phase inverters so as to control the modulation factors of the 3-phase inverters in the variable voltage/variable frequency mode and to control the voltages input to the 3-phase inverters in the constant voltage/variable frequency mode.